CN101346026A - Dimmer and light modulation control circuit - Google Patents
Dimmer and light modulation control circuit Download PDFInfo
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- CN101346026A CN101346026A CNA2008101356944A CN200810135694A CN101346026A CN 101346026 A CN101346026 A CN 101346026A CN A2008101356944 A CNA2008101356944 A CN A2008101356944A CN 200810135694 A CN200810135694 A CN 200810135694A CN 101346026 A CN101346026 A CN 101346026A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention relates to a dimmer and dimmer control circuit. The dimmer control circuit comprises: three-end bidirectional controllable silicon switch element, comprising grid and turned on by trigger signal of the grid, connecting to AC power supply through lamp load; and a first variable resistor, possessing adjustable resistance and regulating lamp brightness by following modes: changing resistance value of the first variable resistor, changing phase of the trigger signal corresponding to AC voltage waveform, prolonging or shortening turning-on time bucket of three-end bidirectional controllable silicon switch element, thereby changing current provided to the lamp load. The dimmer control circuit also comprises a second variable resistor, for changing phase of trigger signal independent of the first variable resistor.
Description
Technical field
The present invention relates to a kind of dimmer and adjusting control circuit, it is used to control the brightness such as the lamp of incandescent lamp etc.
Background technology
Be used to regulate such as the light dimmer designs of the brightness of the lamp of incandescent lamp etc. for changing the brightness of illumination of lamp by rotating light-control knob.For example, disclose a kind of adjusting control circuit in the open No.S51-116068 of Japanese Patent Laid, it is structured in the dimmer.This adjusting control circuit comprises by lamp load, lighting switch and is connected to the series circuit that the TRIAC (triac) on the commercial ac power source is formed, and the phase-control circuit in parallel with TRIAC.
In phase-control circuit, the series circuit that comprises variable resistance and capacitor is in parallel with this TRIAC, trigger device (diode AC switch) is connected at variable resistance to the point between the grid of the connected node of capacitor and TRIAC, can changes the resistance value of variable resistance thus by operation to light-control knob.
If in adjusting control circuit, open lighting switch, then provide alternating current for phase-control circuit.In response to this, slave flipflop spare is exported triggering signal to TRIAC, and wherein, the sequential of this triggering signal is based on and is decided by variable resistance and the determined time constant of capacitor.Then, TRIAC " unlatching " up to the half wavelength cycle, in other words, is begun to become 0 o'clock the moment up to alternating current voltage from the input time of triggering signal, during this period, provide electric current with the turn on lights load.During light-control knob, the resistance value of variable resistance is changed in operation, so that change the phase place of triggering signal with respect to the waveform of alternating current voltage, thereby prolongs or shorten the time span that TRIAC keeps " unlatching ".
Thus, change offers the load current of lamp load, and then causes changing the brightness of lamp.
In above-described adjusting control circuit, usually, adopt the noise suppression circuit that uses capacitor and coil, remove the power supply noise of AC power.Yet the application of noise suppression circuit causes load current that resonance takes place when TRIAC quilt " unlatching ".Particularly, if be near the minimum strength with the brightness settings of lamp load, then the resonance amplitude of load current become very big, to such an extent as to load current may become 0.
For the type of TRIAC, have plane TRIAC and mesa TRIAC, and the plane TRIAC owing to becoming at 0 o'clock, resonance is closed at load current.Thus, contingent is that TRIAC is closed suddenly in minimum strength constantly, and makes lamp become very dark thus.
Problem mentioned above can not appear in the mesa TRIAC, even this is because the mesa TRIAC is configured to load current owing to resonance becomes 0, can be held open yet.Yet, in the timing of opening TRIAC, exist to postpone.Therefore, because when minimum strength, especially become about 180 degree (perhaps 360 degree) and under the situation of not sending triggering signal during TRIAC " unlatching " at the firing angle of TRIAC, the changing down of load current increases, and loses efficacy thereby cause taking place the electric current commutation.
Therefore, under the situation of this control fails, TRIAC is opened and is reached the half wavelength cycle, and this causes so-called flicker (flicker) state, and in this state, lamp is only lighted in the cycle brightly in half wavelength.
Because this problem especially frequently takes place, and be subjected to appreciable impact such as the individual difference of the circuit element of variable resistance etc. when minimum strength, thus this light modulation just between product existence than big-difference.Therefore, urgent problem is a kind of device of exploitation, and it can be carried out normal light modulation and operate under the situation that not influenced by the product differences.
Summary of the invention
In view of the foregoing, the invention provides a kind of adjusting control circuit and a kind of dimmer, it can be carried out the normal light modulation that not influenced by the product differences and operate.
According to the present invention, a kind of adjusting control circuit is provided, it comprises: TRIAC, it is connected to AC power by lamp load, wherein, described TRIAC has grid, and is opened by the triggering signal that is input to described grid; First variable resistance, it has adjustable resistance value, wherein, regulate the brightness of described lamp load in the following manner: the resistance value that changes described first variable resistance, to change the phase place of described triggering signal with respect to alternating voltage waveform, this has just caused the prolongation and the shortening of the opening time section of described TRIAC, thereby has changed the electric current that offers described lamp load; And the second adjustable resistance device, it is used to be independent of the phase place that described first variable resistance changes described triggering signal.
In the present invention, except described first variable resistance, the second adjustable resistance device of the phase place that is used to change triggering signal also is provided, and described first variable resistance is used for by changing resistance value and change the phase place of triggering signal thus, thereby carries out the light modulation operation.
Adopt this structure, possiblely be, for example the minimum strength that is enough to the phase place of delayed trigger signal in use is carried out light modulation operating period, (mesa) TRIAC may be opened suddenly, and since between the various circuit elements of adjusting control circuit individual difference caused can't commutation, cause scintillation may take place.
Also possible is, is using minimum strength to carry out light modulation operating period, and (plane) TRIAC may be closed suddenly, and the illumination of lamp load may become very dark.By resistance value of regulating the second adjustable resistance device and the phase place that changes triggering signal thus, just can avoid these problems.This makes that can carry out normal light modulation under the situation that not influenced by the product differences operates.
Preferably, described the second adjustable resistance device and described first variable resistance are connected in parallel.
In the present invention, because the second adjustable resistance device and first variable resistance be connected in parallel, so the variation of the combined electrical resistance of first and second resistors that change caused of the resistance value of the second adjustable resistance device is less.This makes and can finely tune the phase place of triggering signal by using the second adjustable resistance device.Under the situation of carrying out the light modulation operation with maximum intensity (making the resistance value of first variable resistance become less) by this maximum intensity, can avoid the violent voltage drop in the second adjustable resistance device, and can increase and using maximum intensity to carry out light modulation available brightness of operating period.This is because described the second adjustable resistance device and described first variable resistance are connected in parallel.
Series circuit and described first variable resistance that positive pole at least one pair of Zener diode connected to one another can be formed are connected in parallel.
In the present embodiment, because the series circuit and first variable resistance that anodal at least one pair of Zener diode connected to one another is formed are connected in parallel, therefore the voltage that is applied on first variable resistance can be defined as smaller or equal to a scheduled voltage.This just can use undersized resistor as described first variable resistance.
According to the present invention, provide a kind of dimmer that comprises above-described any one adjusting control circuit.
In the present invention, because dimmer comprises above-described any one adjusting control circuit, therefore can provide a kind of dimmer that can under the situation that not influenced by the product differences, carry out normal light modulation operation.
Use the present invention, a kind of adjusting control circuit and a kind of dimmer can be provided, it can be carried out normal light modulation and operate under the situation that not influenced by the product differences.
Description of drawings
According to the description below in conjunction with each given embodiment of accompanying drawing, purpose of the present invention and feature will become apparent, in the accompanying drawings:
Fig. 1 is the circuit diagram that illustrates according to the adjusting control circuit of the embodiment of the invention;
Fig. 2 showed in various light modulation operating period, can obtain the oscillogram of voltage and current on the difference of adjusting control circuit; And
Fig. 3 is the decomposition diagram that comprises according to the dimmer of the adjusting control circuit of the embodiment of the invention.
Embodiment
Below, to the embodiment shown in Fig. 3 the present invention being described at Fig. 1, described embodiment has constituted a part of the present invention.
Fig. 1 shows the dimmer that comprises according to the adjusting control circuit of the embodiment of the invention.Dimmer 10 comprises pair of outer splicing ear Ta and Tb, adjusting control circuit 11 is structured in the dimmer 10, and it is connected to by on the series circuit of forming such as the AC power 1 of commercial ac power source etc. and such as the lamp load 2 of alternating current type incandescent lamp etc. by external connection terminals Ta and external connection terminals Tb.
By lighting switch SW1, TRIAC TRC (in the present embodiment for mesa TRIAC), be used to remove the choke L of power supply noise and series circuit that Thermal Cutoffs 12 is formed is connected between external connection terminals Ta and the external connection terminals Tb.The capacitor C1 that uses with choke L when removing power supply noise is connected between the rear end and external connection terminals Tb of lighting switch SW1.In parallel by the series circuit that two resistor R 1 and R2 and light-emitting diode 13 are formed with lighting switch SW1.Diode D1 and light-emitting diode 13 reverse parallel connections.Phase-control circuit 14 is connected on relative two the terminal T1 and T2 of TRIAC TRC.
In phase-control circuit 14, the series circuit of being made up of two resistor R 3 of parallel connection and R4, variable resistance VR1 (first variable resistance) and capacitor C2 is connected between the terminal T1 and terminal T2 of TRIAC TRC.In this connected, variable resistance VR1 and lighting switch SW1 were arranged in resistance controller 25, and this will introduce after a while.
Between the connected node N2 of the grid of trigger device 15 and resistor R 3 and resistor R 4 and variable resistance VR1, be in series with diode D2 and resistor R 6.The positive pole of diode D2 is connected to this connected node N2.Zener diode ZD1 and Zener diode ZD2 arrange according to two-stage.The negative pole of Zener diode ZD1 is connected to this connected node N2.Similarly, Zener diode ZD3 and Zener diode ZD4 arrange according to two-stage.The negative pole of Zener diode ZD4 is connected to the terminal T2 of TRIAC TRC.The positive pole of Zener diode ZD2 and Zener diode ZD3 is connected with each other.Resistor R 7 and semi-fixed resistance device VR2 (the second adjustable resistance device) connect between connected node N2 and N1.
In the adjusting control circuit 11 of above structure,, then do not have electric current to offer lamp load 2, and therefore, lamp load 2 remain on and extinguish state from AC power 1 if lighting switch SW1 keeps closing.Simultaneously, light-emitting diode 13 is lighted by the electric current that provides from AC power 1.
If lighting switch SW1 opens, then light-emitting diode 13 extinguishes, and the alternating voltage of AC power 1 is applied between terminal T1 and the terminal T2, and is applied in to phase-control circuit 14.In phase-control circuit 14, the triggering signal (see figure 2) is outputed to the grid of TRIAC TRC, the sequential of this triggering signal is decided by variable resistance VR1 and the determined time constant of capacitor C2.In this case, if changed the resistance value of variable resistance VR1 by rotating operation knob 26, then triggering signal changes with respect to the phase place of the voltage waveform of AC power 1.Along with the resistance value change of variable resistance VR1 is big, the phase place of triggering signal is delayed.
In addition, owing to Zener diode ZD4 the voltage on the variable resistance VR1 is restricted to smaller or equal to a scheduled voltage, makes and to use undersized resistor as variable resistance VR1 by means of Zener diode ZD1.
TRIAC TRC is unlocked and reaches the half wavelength cycle, in other words, from moment of triggering signal input till alternating voltage becomes at 0 o'clock, in this period, provide alternating current to light lamp load 2.If the resistance value of variable resistance VR1 has changed, then triggering signal changes with respect to the phase place of alternating voltage waveform, thereby prolongs or shorten the opening time section of TRIAC TRC.
More specifically, if the resistance value of variable resistance VR1 reduces, then shown in (a) among Fig. 2, the phase advance of triggering signal, and the firing angle of TRIAC TRC is from 180 degree (perhaps 360 degree) skew, therefore the opening time section that has prolonged TRIAC TRC.If the resistance value of variable resistance VR1 increases, then as (b) among Fig. 2 with (c), the phase delay of triggering signal, and the firing angle of TRIAC TRC has finally shortened the opening time section of TRIAC TRC more near 180 degree (perhaps 360 degree).
By adopting the opening time section that prolongs or shorten TRIAC TRC with upper type, change the load current that imposes on lamp load 2, and regulate the brightness of lamp load 2.Along with the brightness of lamp load 2 is adjusted near minimal intensity value (at this place, the firing angle of TRIAC TRC is near 180 degree (perhaps 360 degree)), be used to remove the choke L of noise and the resonance amplitude of the load current that capacitor C1 is caused becomes increasing.
If operation knob 26 is turned to the minimum strength position, then the resistance value of variable resistance VR1 fully increases, and shown in (d) among Fig. 2, about 180 degree of the phase delay of triggering signal (perhaps 360 degree).Therefore, the opening time section of TRIAC TRC significantly shortens, and commutation inefficacy (in the phenomenon that remains on " unlatching " state under the situation without any triggering signal) is easy to take place in the present invention who uses the mesa TRIAC, and it may be an origin cause of formation of scintillation that described commutation was lost efficacy.
Therefore, in dimmer 10, owing to may cause commutation to be lost efficacy such as the individual difference between the circuit element of variable resistance VR1 etc., in this dimmer 10, after the installation that detects dimmer 10 in the process of initial condition, the resistance value of regulating the semi-fixed resistance device VR2 in parallel with variable resistance VR1.
In other words, can change by capacitor C2 and the determined time constant of semi-fixed resistance device VR2, thereby changed the phase place of triggering signal by the resistance value that changes semi-fixed resistance device VR2.Therefore, regulate the resistance value of semi-fixed resistance device VR2, be ahead of the phase place that not influenced by any scintillation with the phase place of guaranteeing triggering signal.By for example variable resistance VR1 being become the minimum strength position, the resistance value of regulating semi-fixed resistance device VR2 then up to lamp load 2 become not influenced by scintillation till, carry out this adjusting.
In this case, resistance value that can double variable resistance VR2 is finely tuned, because semi-fixed resistance device VR2 is in parallel with variable resistance VR1, thereby makes semi-fixed resistance device VR2 and variable resistance VR1 serve as a combined resistance with respect to capacitor C2.
In addition, because semi-fixed resistance device VR2 is in parallel with variable resistance VR1, therefore even under the situation of carrying out the light modulation operation with maximum intensity (making the resistance value of variable resistance VR1 diminish by this maximum intensity), violent voltage drop can not take place yet on semi-fixed resistance device VR2.This just can improve available brightness when carrying out the light modulation operation with maximum intensity.
With reference to figure 3, dimmer 10 of the present invention comprises the shell 20 and 21 of a pair of box shape, and wherein, each in them all has a surface to open wide, and light adjusting circuit parts 22 are contained in shell 20 and 21, and light adjusting circuit parts 22 are made of adjusting control circuit 11.In these light adjusting circuit parts 22, arranged a pair of circuit board 23 with " L " shape, the heating panel 24 that is generally " U " shape is between circuit board 23.The TRIAC TRC that serves as thermal source directly is attached on the heating panel 24.Resistance controller 25 also is fixed on the heating panel 24, and this resistance controller 25 combines variable resistance VR1 and the lighting switch SW1 that is used to carry out the light modulation operation.Resistance controller 25 comprises rotating shaft 25a, and it is used to change the resistance value of variable resistance VR1.
Next, will the typical operating effect of present embodiment be described.
(1) in the present embodiment, thereby except carry out the variable resistance VR1 (first variable resistance) of light modulation operation, also provide the semi-fixed resistance device VR2 (the second adjustable resistance device) of the phase place that is used to change triggering signal by changing the phase place that its resistance value changes triggering signal.
Adopt this structure, for example the minimum strength that is enough to the phase place of delayed trigger signal in use is carried out light modulation operating period, TRIAC TRC (being the mesa TRIAC in the present embodiment) may open suddenly, and owing to form the commutation inefficacy that the individual difference such as between the circuit elements such as variable resistance VR1 of adjusting control circuit 11 causes, thereby scintillation may take place.
Can avoid this problem by resistance value of regulating semi-fixed resistance device VR2 and the phase place that changes triggering signal thus.The dimmer (adjusting control circuit) 10 that can carry out normal light modulation operation under the situation that not influenced by the product differences so just can be provided.Even along with the time progress scintillation takes place, also can eliminate scintillation by the resistance value of regulating semi-fixed resistance device VR2 once more.
(2) in the present embodiment, because semi-fixed resistance device VR2 and variable resistance VR1 be connected in parallel, so the variation of the combined electrical resistance of the resistor VR1 that change caused of the resistance value of semi-fixed resistance device VR2 and VR2 is less.
So just can finely tune the phase place of triggering signal by using semi-fixed resistance device VR2.Under the situation of carrying out the light modulation operation with maximum intensity (making the resistance value of variable resistance VR1 become less) by this maximum intensity, can avoid the violent voltage drop in semi-fixed resistance device VR2, and can increase and using maximum intensity to carry out light modulation available brightness of operating period.This is because semi-fixed resistance device VR2 and variable resistance VR1 are connected in parallel.
(3) in the present embodiment, because the two-stage Zener diode ZD1 that is connected with each other by its positive pole is connected in parallel to series circuit and the variable resistance VR1 that ZD4 forms, and therefore the voltage that is applied on the variable resistance VR1 can be defined as smaller or equal to a scheduled voltage.So just can use the less resistor of size as this variable resistance VR1.
Can following present embodiment be made amendment.
Though the TRIAC TRC of Cai Yonging is a mesa in the present embodiment, also can substitute with the plane TRIAC.In this case, can eliminate the intrinsic problem in the plane TRIAC, promptly, carry out light modulation operating period in the minimum strength of for example using the phase place be enough to delayed trigger signal, the problem that TRIAC is closed suddenly and the illumination of lamp load becomes very dark.
Though semi-fixed resistance device VR2 (the second adjustable resistance device) is connected in parallel with variable resistance VR1 (first variable resistance) in above embodiment, semi-fixed resistance device VR2 and variable resistance VR1 can be connected in series.
Though the series circuit that will be made up of to ZD4 4 Zener diode ZD1 in this enforcement and variable resistance VR1 are connected in parallel and have limited the voltage that imposes on variable resistance VR1, but also can change the quantity of Zener diode, and use other elements outside the Zener diode to limit the voltage that imposes on variable resistance VR1.As alternative, can omit Zener diode ZD1 to ZD4, and adopt the structure that does not limit the voltage that imposes on variable resistance VR1.
Can replace TRIAC TRC and the trigger device 15 that comprises SBS with other devices.For example, trigger device 15 can comprise diode AC switch.
Though lamp load 2 relates to incandescent lamp in the present embodiment, also can use and to regulate other lamp loads of brightness by changing load current.
Though illustrated and described the present invention, it should be appreciated by those skilled in the art that and under the situation that does not break away from the subsidiary defined scope of the present invention of claim, can carry out various changes and modification at embodiment.
Claims (5)
1, a kind of adjusting control circuit comprises:
TRIAC, it is connected to AC power by lamp load, and wherein, described TRIAC has grid, and is opened by the triggering signal that is input to described grid;
First variable resistance, it has adjustable resistance value, wherein, regulate the brightness of described lamp load in the following manner: the resistance value that changes described first variable resistance, to change the phase place of described triggering signal with respect to alternating voltage waveform, this has caused the prolongation or the shortening of the opening time section of described TRIAC, thereby has changed the electric current that offers described lamp load; And
The second adjustable resistance device, it is used to be independent of the phase place that described first variable resistance changes described triggering signal.
2, adjusting control circuit as claimed in claim 1, wherein, described the second adjustable resistance device and described first variable resistance are connected in parallel.
3, adjusting control circuit as claimed in claim 1 or 2, wherein, series circuit and described first variable resistance that at least one pair of Zener diode is formed are connected in parallel, and the positive pole of described at least one pair of Zener diode is connected to each other.
4, a kind of dimmer, it comprises adjusting control circuit as claimed in claim 1 or 2.
5, a kind of dimmer, it comprises adjusting control circuit as claimed in claim 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007180945A JP2009021035A (en) | 2007-07-10 | 2007-07-10 | Dimming circuit and dimmer |
| JP180945/2007 | 2007-07-10 |
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| Publication Number | Publication Date |
|---|---|
| CN101346026A true CN101346026A (en) | 2009-01-14 |
| CN101346026B CN101346026B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101356944A Active CN101346026B (en) | 2007-07-10 | 2008-07-09 | Dimmer and light modulation control circuit |
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| Country | Link |
|---|---|
| JP (1) | JP2009021035A (en) |
| CN (1) | CN101346026B (en) |
| TW (1) | TWI396461B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209514A (en) * | 2012-01-16 | 2013-07-17 | 松下电器产业株式会社 | Light modulator |
| US10264640B2 (en) | 2012-11-14 | 2019-04-16 | Signify Holding B.V. | Phase-cut dimmer device and method of phase-cut dimming for a lighting unit controlled by a rocker-type user interface |
| CN111356258A (en) * | 2018-12-21 | 2020-06-30 | 芯源创科技(深圳)有限公司 | Light modulation circuit applied to light emitting diode lighting system |
| CN113242634A (en) * | 2021-05-24 | 2021-08-10 | 珠海格力电器股份有限公司 | Dimmer switch, method, controller and storage medium |
| CN113597819A (en) * | 2019-02-12 | 2021-11-02 | 意斐株式会社 | Bidirectional thyristor module |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011060728A1 (en) * | 2009-11-19 | 2011-05-26 | Huizhou Light Engine Ltd. | Method and apparatus for controlling brightness of light emitting diodes |
| JP2012038679A (en) * | 2010-08-11 | 2012-02-23 | Toshiba Lighting & Technology Corp | Illumination control device |
| EP3096070B1 (en) | 2014-02-13 | 2020-04-01 | Kaneka Corporation | Light emission module, connector, and mounting structure for light emission module |
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| JPS55132900U (en) * | 1979-03-13 | 1980-09-20 | ||
| US5327047A (en) * | 1992-09-30 | 1994-07-05 | Leviton Manufacturing Co., Inc. | Electrical dimmer system employing alternately applied silicon controlled rectifiers |
| US6593564B2 (en) * | 2001-07-13 | 2003-07-15 | Ching Chi Cheng | Photo switching device having a control circuit with a gate controlled device |
| TWI239223B (en) * | 2002-07-29 | 2005-09-01 | Benq Corp | Driving of discharge lamp tube and apparatus for controlling light adjustment |
| JP4127131B2 (en) * | 2003-06-25 | 2008-07-30 | 松下電工株式会社 | Light control device |
| TWM250500U (en) * | 2004-02-13 | 2004-11-11 | Chuan Shih Ind Co Ltd | Dimming circuit of gas discharge light |
| US7262554B2 (en) * | 2004-10-16 | 2007-08-28 | Osram Sylvania Inc. | Lamp with integral voltage converter having phase-controlled dimming circuit with hysteresis control for reducing RMS load voltage |
| JP2006134718A (en) * | 2004-11-05 | 2006-05-25 | Mabuchi System Engineering:Kk | Dimmer for lighting tool |
| TWI282252B (en) * | 2005-11-30 | 2007-06-01 | Princeton Technology Corp | Fluorescent lamp lighting adjustment system, control device and method thereof |
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2007
- 2007-07-10 JP JP2007180945A patent/JP2009021035A/en active Pending
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2008
- 2008-07-08 TW TW097125717A patent/TWI396461B/en active
- 2008-07-09 CN CN2008101356944A patent/CN101346026B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209514A (en) * | 2012-01-16 | 2013-07-17 | 松下电器产业株式会社 | Light modulator |
| CN103209514B (en) * | 2012-01-16 | 2015-06-17 | 松下电器产业株式会社 | Light modulator |
| US10264640B2 (en) | 2012-11-14 | 2019-04-16 | Signify Holding B.V. | Phase-cut dimmer device and method of phase-cut dimming for a lighting unit controlled by a rocker-type user interface |
| CN111356258A (en) * | 2018-12-21 | 2020-06-30 | 芯源创科技(深圳)有限公司 | Light modulation circuit applied to light emitting diode lighting system |
| CN111356258B (en) * | 2018-12-21 | 2022-01-04 | 芯源创科技(深圳)有限公司 | Light modulation circuit applied to light emitting diode lighting system |
| CN113597819A (en) * | 2019-02-12 | 2021-11-02 | 意斐株式会社 | Bidirectional thyristor module |
| CN113597819B (en) * | 2019-02-12 | 2024-01-30 | 意斐株式会社 | Bidirectional silicon controlled module |
| CN113242634A (en) * | 2021-05-24 | 2021-08-10 | 珠海格力电器股份有限公司 | Dimmer switch, method, controller and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101346026B (en) | 2011-11-23 |
| TW200913762A (en) | 2009-03-16 |
| TWI396461B (en) | 2013-05-11 |
| JP2009021035A (en) | 2009-01-29 |
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